BLADE:This kind of katana is hand forged,and it can be fully disassembled anythime to maintenance and you don't need worry about loose. via japanese technologic and hand abrasive to Razor sharpened blade!The blade of this sword is extremely sharp and may cause serious injury.also the katana can cut tatami with a strike and bamboo not cracks on the edge!This battle ready sword suit for kendo and iaido superior.